Cable-clamp.



E. W. MARSHALL. CABLE CLAMP. APPLIOATION FILED SEPT. 13. 1912.

I. A SIT:

Patented Apr. 29, 1913.

o thdanaihiaane To all whom it may concern:

'ing a part thereof.

My invention relates to devices such as are used for supporting electriccables or the like along the faces of walls, ceilings or otherstructures and its object is to provide such a device which is soconstructed that a bridle-ring or support. for-other wires may becombined therewith in 'some such manner as those shown in theaccompanying drawings which I will proceed to describe in the followingspecification and the novel features of which I will set forth inappended claims.

Referring to the drawings, Figure 1 is a sectional side elevation of acable clamp embodying my invention, showing a cable in cross-sectionheld thereby and with a bridle ring shown in elevation. In Fig. 2- acable and clamp are shown in similar view, with a part of the bridlering shown in section. This figure illustrates a modified form ofconstruction. 7

Like characters of reference designate corresponding parts in all of thefigures.

As illustrated in Figs. 1, 2 and 3, the hanger comprises a clampingmember formed of a sheet metal strip bent to form a hook-like portion 10which is adapted to partially surround a cable 11 and to hold it againsta wall 12. One end of this curved portion of the clamp is carried backto the wall where it is bent at right angles to form the base 13 whichis adapted to rest upon the wall. Thenif desired, the metal may be bentback upon itself to form the portions 14 and 15 which reinforce the base13 and a part of the curved hook 1O rcspcc tively.

A hole is punched or drilled through the parts 13 and 14- through whicha holding member may pass by means of which the clamp is secured to thewall. in Fig. 1 this holding member is a hig-screw ill, the head ofwhich is drilled and tapped to receive the threaded shank 21 of a bridlering 20. This is an ordinary ring, open at :22

Specification of Letters Eatent.

Application filed. September It 191:3.

bent portion adapted to partially cu Serial n'mreaiac.

so that wires such may be insertedtherein.

ln the arrangement shown in Fig. 2 a screw 17, is used to aiiix theclamp the wall. The head of this screw is threaded and'the shank of thebridle-ring 20 is enlarged as at 24 and internally threaded to fit thescrew-threads on the outside of the head of the screw 17.

The cable is held upon the wall by the clamp in the usualiaanner. Itcontains a plurality of wires, enough for the service for which it isdesired. But if the service increases so that more wires are needed,they may be added as needed, by simply adding the bridle rings which maybe readily affiXed to the member which. fastens the clamp to the wall.This overcomes the principal diiliculty of such devices as haveheretofore been used in which the bridle-rings were screwed into themetal of the clamp itself which does not afford a sutlicicnt hold forthe ring and in which the threaded holes oitcen become so corroded orotherwise injured as to be useless.

Several modifications of this device areillustrated and described toshow that I do not limit myself to any specific form of construction.

lVhat I claim is:

1. A cable clamp, a member for atlixing said clamp to a desiredstructure, said memher being provided with. two sets of screw-- threadsof different diameters in axial aline-- ment with each other, and anauxiliary holding device threaded to lit thc sci-cw thread on saidmember.

A hunger for sifppmling a cable against a desired structure. comprisinga the cable. a portion prowl 1g a surface adaptml to lie against saidstructure. and provided with an opening. an externally threaded screwadaplcd to pass throu '1 said opei'iing into the structure and h. a headpiOYldQtl with s rew threads ot dif ferent dian'ictcr than those of thescrew and a bridle-ring having a threaded portion adapted to fit saidthreaded head.

A hanger for supporting a cable against a desired structure. min misinga bent portion adapted to partially encircle the-calde, a portionproviding a surface adapted to lie againstsaid structure, and providedwith an opening an or: nail};

fill

threaded screw adapted to pass through said In witness whereof, I havehereunto set opening into the structure and having a my hand this 12'dayof Sept. inthe year :head provided with an internally threaded 1912.

axially disposed hole of smaller-diameter ERNEST W. MARSHALL.

5 than that of the screw, and a bridle-ring Witnesses:

havin van externally threaded shank adapt- F. B.' 'GnAvns, "ed to t saidthreaded hole; G. R. QUiMBY.

